I flew those Pipers back in the 80’s, as well as a T-tailed Arrow IV and Seminole twin. They had some different handling characteristics compared to conventional tailed Cherokees and Cessnas. But nothing really onerous. Stalls & spins looked & sounded scary in the Tomahawk, as there was quite a bit of flexing in the tail. In an aggravated stall you could potentially blank the elevators causing them to stall and the plane to pitch up.

in short, t-tail designs aren’t bad, just different.