This was always an iffy thing for me. The staff is over 5 ft long, which makes wielding it in 1 hand problematic in reality. I understand that even PnP allow it, but I always found it to be a bit over-reaching. If you're going to do that, just make a club version, or have the staff shrink into a club at the wielder's command.
You can still jab people just as if you were using a spear and it'll hurt a decent amount. If it is a realism concern just have the damage drop from a 1D6 two-handed to a 1D4 one-handed the same way longswords work.
This wouldn't bother me at all because my druid uses Shillelagh and the damage from it is magical in nature. As long as the spell does the same damage it works fine for me. I just want to be able to use my cool magic staffs without dropping my AC.
Otherwise have the druids give you a magic club or something. I dunno.
