I did some training at a place that used computer simulations with actual rifles with the bolt replaced with a laser bolt. I wasn't aware of it at the time, but they have policy where you can bring your personal AR-15 and Glock 22 to the facility and will swap the parts out and make a laser gun. Since I did not know about this policy I used one of their AR-15’s and Glock 22’s, the problem was that both of my weapons have weapon lights on them. We had a scenario where we had to enter a dark building from a bright outside around high noon, normally this wouldn't have been an issue since I had weapon lights on my both of weapons. The problem was that I had a Streamlight ProTac 2AA Ultra Compact Tactical Light on my Plate Carrier and since I have never trained on using the light I completely forgot about it. I went through the scenario with little night vision. It wasn't until after the scenario I remembered that my light was sitting right next to magazines on my plate carrier. This is why it is important to train with what you are planning on taking to battle or Bug Out With. When you are stressed or having to think about million different things going into a situation you are going to revert back to training and you won’t remember all the new stuff.
When I first got my Plate Carrier I thought the setup it came with was a pretty good setup, but as I started to do more and more training I realized I need to tweak a few things. It is always important to test out the gear that you have and make sure that it works for you. I run a 3-point sling on my AR-15 but after I got my Plate Carrier and Hydration pack I didn't like how the 3-point sling felt with all the gear on. The sling got caught on all my gear and made it hard to maneuver the rifle. Without the Plate Carrier, I love the 3-point sling. It works amazingly well, but I would have never known how it worked with the vest unless I actually did training in it. I also ended up taking off the cross draw holster that came on the vest as well. Not only was the location weird the holster did not work well with my 1911, but worked great for my Glock. One of the biggest things I found out while training was position of my pistol holster. I originally had a Comp-Tac Belt Holster OWB, that worked great without a plate carrier, but with a plate carrier it was damn near impossible to get a clean draw from. I ended up getting a G-Code RTI DUTY Mount with G-Code SOC Rig Duty Belt holster to go with my plate carrier. The Duty Belt Holster was made specifically for people running plate carriers, as the holster rides below your belt line when attached to a belt. Had I never trained with my gear I would have never known about these issues until it was too late.
As you can see it if very important to Kit Shakeout, you don’t necessarily(though highly recommended) train with your kit to do a shakeout, you can just gear up and try some house clearing(with unloaded weapons!!!) and that will even open up your eyes to how your gear is working. Also practice using and trying to access the other gear on your belt and/or plate carrier. Try accessing your trauma kit, try getting to your tourniquet with all your gear hanging off you, trying transition from rifle to pistol, or even reloading with all your gear on. Just make sure you know where all your gear is and how efficient the gear placement is.
Comp-Tac: http://www.comp-tac.com/product_info.php products_id=66&osCsid=i0m9gerjfmuumpmv4t9mlmtfg2
G-Code RTI Duty: http://www.tacticalholsters.com/product/Accessories/GCA30.html
G-Code SOC Rig: http://www.tacticalholsters.com/product/SOC/SOC_Holster.html