I'm new to Glocks, and handguns themselves for that matter. Is there any reason NOT to use Gun Butter for my grease? I watched James Yeager's how-to cleand and lubricate youtube videos (http://www.youtube.com/watch?v=pGobEpUO3Uc), and he uses Gun Butter. I did note that he is using the Trigger and Locking Lug grease, which Gun Butter's website says is not necessary for use on slides: "Note: We do not recommend use on slides surfaces, as the performance of Gun Butter alone is optimal." Any comments/suggestions? Thanks!