Im dumbfounded by your question mark, i can only agree to you more on that they may be communal in sense that it is the captive living condition we have imposed on them and they may be so well tolerable towards each other. I can see no reason in the wild where they benefit living communally. I've observed that by keeping them together they tend to bully each other when one catches a cricket they rush towards him and try to take over the catch. Unless the Arizona people here confirm they are so.
I have found some sharing the same retreat, especially younger instars, like you said I doubt they benefit from it, but they are definitely a very tolerant species overall...like I said after dominence has been established usually bullying will occur, but overall I'd put V. spinigerus in the category of "tolerant/they get along" category, with exceptions, which there are going to be even in the most communal setups...
yeah if he doesnt kill the mate, hahah...
