I think it's a great idea .... the more the merrier !!
As an aside, I once when went to the Marine training center somewhere near Exmoor as part of a 'get to know paintball' initiative for the top brass down there.
We had a demonstration of about 5 or 6 of these marine guys assaulting a house me and another guy were in, I'm pretty sure they described it as FIBUA, the acronym standing for 'fighting in a built up area'.
The idea was, the 5 marines took the house we were in with both of us having markers ..... I have to say, the top brass were both impressed and unimpressed; and the marines themselves?
Let's put it this way, I think it impressed upon all of them just how fickle life can be ... on a knife-edge as it were ... here one second, gone in a chest full of paint the next .......
I think the metaphor was not lost on the top brass there and they understandably declined using paintball as a training weapon considering the improved range and accuracy of real weapons when applied to a similar situation.
It was extremely interesting day and I was really really impressed with the way they treated us and the degree of training those guys underwent .... I have nothing but admiration for any of those men in putting on that uniform .......it takes a degree of bollcks, the most of which, the vast majority of us can only imagine .... those guys have nuts, coconuts !!!