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Yes some people will say it is not appropriate, but I think it is much much better than playing with unpainted stuff, especially if you do not care about the miniatures themselves.
I decided for the second option and bought Bar-Lev
I honestly don't see the problem.
Some time ago I made the decision that online arguments/debates aren't really worth the time, and usually neither side will change their opinion. Oddly enough, this has led to me spending way more time painting, which has decreased the likelihood of my needing to "try out" a game with the unpainted stuff.