Lowa's are the way forward my friend...
Nah, always had them and they are a top boot, especially for Infantry....Never had no dramas with the sizes though and don't know anybody that has, I ran in the shop down at Bulford, asked for 11's, lashed them on and that was me laughin...Unless theres a difference between the Combat version and the Mountain ones...
If your also concerned about the heat, I've seen alot of troops wearing Lowas in Iraq so they cant be that bad, should imagine with a light pair of socks on they'd be alright.....I haven't though so I can't tell you first hand..