I was curious about this because I had never been able to spot the difference between a Pasela TG with black sidewalls and a T-Serv. They even have the same tread at the sizes I've looked at. I've used both and they felt about the same to me. Looking at the Panaracer site for the new ones, it looks like the T-Serv uses a different rubber compound ("ZSG Natural Compound for excellent all-weather performance") and that may have been true of the old ones too. I didn't keep either one long enough to have an opinion on durability (sold the bikes they were on). I got a two flats in 1000 miles with the T-Servs, but those were on my commute route which challenges even the best of tires (bike lanes full of debris). This leads me to think the puncture protection is just average (for a tire that claims good puncture protection), but two flats isn't a lot of data so it may just be a couple of flukes.

I wouldn't say the ride feel is great, but it isn't terrible either. I would rate them as a little better than a Panaracer Ribmo and a little worse than A Maxxis Re-Fuse, nowhere near as good as a Continental GP 4 Seasons.