DH's maternal grandparents were Russian, and he loves this name, in part because it would be a way to pay tribute to them. He also prefers to use
Sasha on its own without
Alexander as a full name.
I also love the name on a boy - its intelligent and exotic sounding to me. BUT, I would worry a lot about giving it to a little boy because it is so predominantly used as a girl's name in this country. The boy could be in for some serious teasing if he's a little geeky or wimpy.