Yes. A monk weapon must lack the two-handed property, but nothing prevents a monk from wielding such a weapon with two hands. Fundamentally, a monk weapon counts as such no matter how a monk uses it.
and his ramblings
Yes. A monk weapon must lack the two-handed property, but nothing prevents a monk from wielding such a weapon with two hands. Fundamentally, a monk weapon counts as such no matter how a monk uses it.