it is so annoying to forget the D-gear at home! i dont do it very often but i have done it a couple of times and gone off to work. luckily we have a pharmacy a couple of doors down from the school that will check my bg for me.
im on mdi and dont have a cgm. im usually pretty steady and can guestimate my bg most of the time, but i dont like doing exercise without the gear. there are times when i exercise that i think im low/high/in range and then i test and am surprised. i dont feel the changes as much when doing physical activity.