It seems the Italians and Spanish are more open with their man love than those Europeans of more northerly latitudes.
Here in USA, it is mostly high 5's, low 5's, medium 5's, and of course the high 5's into bro hug move.
Personally speaking, bro 5's into bro hugs and bro fists are as far as I go with my male friends. Never even think to go in for a hug or anything. Same with every guy here actually.
Strangely though, when we're doing something competitive like a physical sport such as Football, we never think twice about embracing, forehead kissing, butt squeezing etc.. Of course if this wasn't an internet forum, I'll admit I wouldn't be comfortable talking about it, it's just something that happens but is never discussed. Must depend on what the society you're brought up into "accepts" as heterosexual behaviour, and for some reason wanting to adhere by it.
I just find the "uncomfortable" factor strange.. things will more than likely develop overtime to reflect how it is in other more open countries like Italy. It's just a matter of time methinks.