Well yeah its ok if you have a reason for using them. I use xbow for bloody bolts and acid bolts, but taht does cut down on my TP use because I use my acid bolts to pull and to drop a def down status effect or 2 and I use bloody bolts for healing, so I don't always get to use my TP before I switch. I constantly lose 3-4 shots worth of TP on switching.

I'm about to stop carrying xbow because of how much TP I lose by using it.

But to answer your question, go for it, there nothing wrong with it unless you are in some sort of set SC.

Dauthitaru Ranger Extrodinaire at your service!
Job Levels: Ranger: 34 Ninja: 13 Warrior: 15 White Mage: 30 Red Mage: 15 Thief: 5
E-Bow: not yet
Peacock Charm: not yet
Onithus Bow: not yet
Leaping Boots: got them
Emporer's Hairpin: got it
Optical Hat: not yet