no i have no tricks for that --the shine needs to stay undisturbed
i never figured out how to use those gloves--they successfully took off the shine as well as my bare fingertips did
but i was in a great chocolate class once and i can't remember what he did to preserve the shine
i'm thinking using a little spatula so you never touch them
because heat is gonna mar them
just handle them on the bottom not on the sides
there's some great chocolatiers on egullet dot org in the pastry section
i'm sure if you search you can find an answer or even register and ask--they are brilliant choco peeps andrew shots gets on there sometimes and kerry beal is super
maybe that's discussed in here:
http://forums.egullet.org/topic/144068-chocolates-with-that-showroom-finish-2012/