Swings and roundabouts, the Westie is the same and I actually find it more convenient having the sliding door on my side, makes loading stuff in quicker and my grandaughter can get in my side and I can have her fastened in quicker and on our way. Twin slider would be best but I've had the door on either side and prefer it this way. Probably helps that I virtually never park on the road though. I'd love it if the fuel filler was on the driver's side though, it's a pita where it is.