Coming from a theorycraft sort of realm here.
I think as a Pugilist who cross classes for enmity generation abilities, as to what Kiote has suggested, doing a one-on-one tank.
If you equip the Monk job on top of Pugilist, you lock out most of your cross class abilities and are left with Lancer and Archer. So I think you'll lock out most of your enmity generation moves, save for Taunt.
Many folks will probably look more toward the speed run and ease of performance aspect of things. So until demonstrated with video on the content they care about, may not be deemed as a viable option from most players you'll come across.