They both have the same hard pruning requirements so they should both be fine with roses.

Well, texensis take longer to recover from winter cold than do viticellas in my zone, though in Kentucky that won't be much of a problem. Texensis have drooping tulip-shaped flowers, whereas the viticella species has drooping "clematis"-shaped flowers, though some viticella hybrids have blooms facing up, a great plus.

Micheal, do roses take longer in your zone too? Some are blooming already here. Some roses I mean. Though the International Test Garden here won't really be spectacular until June.

I have texensis 'Princess Diana' and her tulip shaped blooms point UP rather than down.