RtrnofdMax

Ya you can have a weapon attribute bonus and one from a worn item. In this case you will see might from Godansthunyr and Pensiavi mes Rei:

I have used all of the standard companions and I settled on a group similar to those being proposed. I have Eder and a 2-hander Kind Wayfarer Paladin as the meat up front. I then have Aloth, Durance, Hiravias and GM with the CC and spells. I wish I had gotten Hiravias sooner. He and GM single-handedly took out Sserkal when everyone else got paralyzed. Relentless Storm, Venombloom and Hail Storm with GM spamming knockdowns via Amplified Wave. Done.

I thought attribute bonuses from weapons stacked with those from worn items? They are pretty rare, only occurring on a few items (Jena's Lance, Godansthunyr, Prey Maker). I can check later.