As I said in my first post "in the examples given", although when I looked back a little bit closer, I see that only Kevin Hornby had stated he was doing it that way. So sorry if that confused you.
I believe "real" scientists used capitol letters for dominant, and lower case for recessive, but it has been a few years so I'm not totally sure.
Be careful with labeling normal as dominant. A normal gene on the albino locus is dominant, but a normal gene on the pinstripe locus is recessive.
And yes, the bottom line is that as long as people know what letters represent what, they should be fine.