Note that in Lone Wolf, you get a lot of points, enough to max more than 2 schools. Even assuming you get stuff like crafting/blacksmithing and some random points, it's very easy and highly recommended to have all schools at 1 or 2(depends on the school) to get various early buffs:
Well, part of my reason for wanting to do this is that I have a lone wolf pair at 15th-level where I went with 3 skills, one physical and two magical. I'm finding the split between them has watered down their overall power and requires juggling stats, skill points, etc. to maintain effectiveness in all areas.
I had thought of doing a pure physical (strength) and pure magical one but the magical one then suffers from not having enough skill points since there are far more magical skills to devote points to.