Is it bad to vary my carry positions?

I've been carrying a Glock 19 at my 4:30 for almost a year. I recently tried appendix carry and I kinda like it because I'm sitting a lot during the day. Lately, I've been carrying (and practicing) both ways depending on the day's activities. I understand that dedicating yourself to one position is beneficial for muscle memory, reaction time, etc. But honestly, is it that bad? Thanks in advance! via /r/CCW http://ift.tt/1YxvFFk