Hexagon does allow painting texturing and bumpmapping an object. As much as I love hexagon for modelling, and UV mapping, I can't say that I used it for texturing.
I always find myself switching to Deep Paint (mostly) and to Zbrush for those tasks. 

I think familiarity has something to do with it. I just happened to learn texturing in Deep Paint and Zbrush before I got Hexagon. I've seen other people do some fantastic texturing in Hexagon.

There are few other apps that will do this, I think Modo and Silo do it. I hear there are some free ones out there that work similar. I think Blacksmith may do this too, but I can't say I followed what blacksmith is all about.

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