Originally Posted by
HTupolev
It's a different sort of design.
Paselas use a thin non-tubeless road casing. If you choose the version with a protection layer, it's a sub-tread belt, intended to shield against particularly sharp objects on the road.
GK slicks use a somewhat thicker casing that makes for easy tubeless setup and should be tougher against sidewall abrasion/cuts, relevant on chunky gravel.
Yeah, I've done my share of riding over variously-chunky "gravel" on my 1" and 28c Paselas. The tread cap seems fine, wraps around well, but the thin sidewalls show signs of the outer ply literally wearing away. That means that I've been just plain lucky, that none of those abrading rocks were very sharp!
Panaracer has tires that seem to more or less be a Pasela with reinforced sidewalls, which would be a good road and gravel tire indeed.
I'm heading out on my 1" Paselas just now, fingers crossed since I love venturing off road on my Pro Tour and hope that my good luck isn't all behind me.
If it wasn't for the frankly severe chunkiness of the trails that I often find myself on, the Paselas would surely be adequate for what often passes for "gravel".