The t-5 will hold up fine as long as you don't do high rpm launches and quick shifts. If you drive normally it will be fine. I've had two camaros with t-5s. I broke the shift fork in one cause I used to drag race the car a lot. The second one I had held up fine, even after I put a 350 in it, but I did drive it as hard. The guy I sold it to drives it hard once and a while and it is still holding up. The most common thing that breaks is the 3-4 shift fork and it is fairly easy to replace. If I had a set of clutch pedals, I would have a t-5 in my truck right now.
It all depends on the driver. Just don't expect to drive it like a muncie or t-10.