My take on bags.....
When I got my Classic, I choose the Classic over the standard just because I liked the look of the Triumph leather panniers....lets call them the American term......saddlebags.
I didn't like all the accessory gook like the 3 chrome rails or the Triumph embezzler, just the plain leather bags. Mine aren't sagging or out of shape, but then, I don't try to stuff my laptop in or a couple of 12 packs either. The stock bags are supported from the bottom and back sides. I do suspect that as time goes on, they will succumb to the relentless pull of gravity and start to loose their shape just like older women do, but just like older women, I have a cure for any eventual sagging. Women call it cosmetic surgery, I call it aluminum plates cut to shape and riveted with stainless button head studs in the lids, front, back and sides when the time comes. Personally, and I've said this before, while the Corbin baguettes don't ruin the look of the R3, the Corbin bags look better on a VTX. In all actuality, the R3 with the Beetle bags looks like an 1800 VTX from the back, the only difference being is that the 1800 VTX with the Corbin bags has integrated turn signals, which, believe it or not, are off the shelf Toyota Celica units.
Triumph calls out their bags as 4mm Aniline leather. They are pretty thick. I use Black Rock leather supplement on mine. It's available in good harness shops. I haven't a clue what Aniline leather is. Aniline might be a good term for water buffalo hide for all I know. The Triumph bags aren't cheap, but compared to the Corbin bags they are. Forget the liners. I use hefty bags anyway. We call hefty bags for trips, 'West Virginia Luggage'.
I'm with you on the Leatherlykes. They ain't anything like leather. They look like a cheap (Wally world) attaché case. Just the thing to screw up a classy bike.