I used to play 2hander exclusively myself - however since my last retire I've been playing as a shielder and I've found that a 18/18 build works out pretty well. The two things you REALLY want alot of are shield-skill and most importantly athletics. Your weapons are shorter and shields are heavier so you really need the athletics to be able to get in there and do some damage. I think footwork is MUCH more important for shielders than two-handers, (if you want to do well, at least).
I went for this build, which is hybridized around 1h+shield and lancer cavalry. This left me with 134 in 1h and 96 in polearm.
Ironflesh 0
Power Strike 6
Shield 5
Athletics 6
Riding 6
Weapon master * 6
If you don't care about riding, I'd say drop the 6 riding points into Ironflesh, otherwise don't bother: Ironflesh is a luxury, not a necessity for shielders.