If you get a lot of pinch flats perhaps you run pressures too low or the tyre is too flimsy for you and your riding? The Nobby Nic’s are only 550g-600g plus tyres right? Like a lot of the Continental tyres e.g. Mountain King?
I love my Prowler SS 2.3 (rear) and Stout 2.3 (front) combo and wish I had bought more of them when CRC had them for silly money. They are heavy at +800g but they rarely ever puncture with my 100 miles (50 of which is commuting) per week and 15 stone bodyweight. I also like my Spesh Eskars, which are light at 700g ish, but the Stout outperforms the Eskar on the front and the Prowler SS wears MUCH slower than an Eskar. Can’t believe the Prowler SS never caught on, it’s very much like a Kenda Small Block or Larsen TT, but much more mountain bikey….
I prefer a bit of pressure in the rear to be honest. 50-55 psi. When I went too soft, like 35, the bike got slower and I ended up putting the 5.1’s a little bit wibbly. Plus I got more pinch punctures. In front I stick in 35 psi.