Yeah, I was just looking at those on the HD website, maybe later as at $195.95 a bit pricey, but you never know I may go that route. The stock ones are a bit cheesy!
I bought some locking doors here in the classified section for $60. Watch the classifieds and eventually what you need will show up.
I use mine year round. After getting the fuel/air mixture like it should be and the premium oil cooler I'm good. Stop and go traffic can produce some extra heat but if I am going to be in town I'm not going to be on the ultra any way