I've got rubber bolt on pads on my 314CLCR, 314DLCR, both my 314ELCR, and, all 3 of my 328DLCR.
We run them on every surface imaginable. Rip rap, gravel, clay, hot asphalt, broken concrete, clay, etc...
My 314CLCR pads are at 8500 hours, and on their second chain set. They are from Rio Track and Rubber. They have chew marks, but no delamination.
My 314DLCR has pads from MWE, and they made it to another chain set, but, they chunked out severely, and will be gone before 8k hours.
Both my 314ELCR have OEM cat rubber bolt on pads. I have major delamination issues with them, and the rubber, when new, was half as thick. They will be gone before the chains wear out.
My 328DLCR have Rio 800mm bolt-ons on their 900mm grousers. They seem to be holding up rather well, but none have more than 4k hours.
I also have clip-on MWE 800mm pads on my 320DLRR. They wear well, but in 4 years or so, I've lost at least 13 due to clip failure.
Bolt-ons are the way for me to go, here, BUT, you'll have to plasma or burn 4 holes in every triple grouser.
My PC128UU-2 and PC228 have road liners, in place of triple grousers, and, they all delaminate early, like before a 1/4 worn. They'll get triple grouser with bolt ons, someday.
As an aside, on my 314DLCR, it was rather cheap overall to swap the standard triple grousers for predrilled triple grousers, then add the bolt on pads.