I haven't noticed any problems with my tour pak, but it's early yet. However, rather than use the Harley goop they gave me, I am sold on everything made called Glare, and so used their leather/vinyl/plastic conditioner on mine the other day when detailing her for this upcoming weekend trip. The stuff goes on easy, doesn't make the leather have an unnatural "shine" to it. Here's the product blurb:
GLARE Vinyl · Leather All Weather Protectant
A special blend of natural ingredients and a chemical formulation called SUPPLEXIN which is designed to beautify, soften, deodorize, preserve, and protect against damaging agents found in the everyday usage of your vehicle's interior. This product cleans, conditions, preserves, and protects in one easy step. Contains no harmful silicons, or adverse active ingredients. Blocks harmful UV rays. The finest and most technologically advanced interior product ever unleashed on the car care market, and thus worthy of the Glare Name. Smells great. [12 oz.]
The UV protection is the main thing I'm interested in, as that is what will fade the leather over time, regardless of the treatment substance. This company's Polish is the best stuff I've ever used, and I've got over 20 bottles of chit on my shelf that I've tried over the years. Will protect against
brake fluid spills, gas, acid rain, bug guts, UV. I've talked about the stuff before on here, but not the leather stuff. Here's a link to their site...
http://www.autopolish.net/default.asp