Sorry, I don’t know the answer to this, but would love to be able to blame my slow progress up HR Ventoux on my low resting heart rate, this is an excuse i’d not thought of!
You probably have a big heart that pumps more blood per heart beat, making things about equal.
Only issue I suffer from is getting up too quickly from the sofa and feeling a bit light headed for a second or two.
There may be other consequences, but I don’t think it will be holding you back much, if at all.
I’ve got HR Dolomites in the calender too, should be a great event