Hello,
Definitely been there and done that. Our DD (still) only has no more than 30 mins in her pushchair, and I, too, felt the "odd-one-out" with the other mums, I'm sure they thought it was weird that I was always rushing home to get DD to sleep in the cot (as she won't transition from pushchair to cot, or anywhere to cot, actually). But, like you, I was actually happy to do what's best for her and the added bonus was that I got a sit down too!!
If its any consolation, even though DD still won't sleep well other than in her cot, I find we can be more flexible with her naptime now, and organise it around the pm activities.
HTH! x