Hello everyone! I'm new member at this forum. I have been searching shoulder holster for my glock19. My friend recently purchased from amazon https ://www.amazon.com/dp/B0776MNV77 He said "This holster so comfortable than ever used before and very good quality." I think about order but i never used shoulder system before. I always carry kydex and owb. I travel a lot is it difficult to use for me?