i breast feed as well and bottle feed him every once and a again and he hasn't lost his latch, it's actually easier sometimes when you're out and can't breastfeed right at that moment
I breast and bottle feed with no latching problems. I recommend getting a bottle designed for nursing babies. I use MAM bottles they work really well for me.
I also started bottle feeding when he was 3 days old because he bruised my nipple really bad and needed to give my nipple a break now and then to heal.
Im breast and bottle feeding too. No problems with the latch. I think it does help you in a way that even if ur out u can bottle feed.