It's fine if you hit reload or go to the cart the https comes back and stays the whole way through the order.
Happened to me with Chrome.
It'd be nice if you could mix & match colors on tips. I have RE0's and something I'm finding very difficult is differentiating the left from the right, other than the tiny L or R on the cable relief. It'd be nice to buy a pack of half red half blue or something like that.