24/15 is a good heavy infantry build. Get into the fray, defend teamates, and make that one decisive blow when there is an opening. But it can get boring.
Personally I'm going for 18/24 infantry at level 32. I won't have any ironflesh or WM til higher levels, but with only 1h wpf I don't need to level it that badly, and 8 shield skill more than makes up for some missing hit points.