As far as the vachetta, I have used Apple on my LV handles with great results.
I wouldn't worry about the coated canvas. Try conditioning the trim, but don't worry if some gets on the coated canvas parts- it wipes right off. The regular canvas, on the other hand, I would tape off so as not to get the conditioner on it.
As far as the Bleecker, I would go ahead and condition the leather parts (not the sueded parts, obviously). As long as you use it sparingly (you should use a soft cloth to appy it, don't ever just pour it on the leather) there is no way it would soak all the way through to the suede side.
Good luck!
I don't want to moisturize the vachetta, I want to put tape on it to protect the vachetta since it runs on either side of the leather. Is that a good idea?