Crazy question. I like wearing my baby carrier to walk my older son to the bus stop. I have just…

Crazy question. I like wearing my baby carrier to walk my older son to the bus stop. I have just started to venture out to the store and such but I'm not sure how to go about wearing him. When I'm home, I put him on, then my coat. Would I just do the same thing out? It seems like a hassle to have to take my coat off, then put him on, then put my coat back on. Or should I just wait until the seasons change to wear him more. Let me tell you his car seat is heavy. Lol