Out here, in the South, about 70% of the riders I know are actually males, although they all ride Western. I have yet to see a guy riding English out here, but that doesnt mean anything. About 99% of the population here rides Western
AND, out of all the guys I've seen riding, I've only ever seen two obvious gay guys. I for one would be thrilled
to see a male rider riding English around here. I think its wrong how people stereotype male English riders as being gay... No need for that nonsense. Most people are under the impression that horses are only rainbows and unicorns, well I got a little something to tell you...
For the longest time riding was dominated by males, now all of a sudden its a feminine sport? Wow, that's strange. And, the majority of riders competing way up are males anyway.
As far as riding clothes go, don't stress it. You don't want to jump right in and buy a whole bunch of gear (it can get quite pricey) until you know for sure
this is what you want to do. And once you do decide, and want to get the gear, then the fun of shopping for riding clothes starts. A helmet, a pair or two of tan/black/navy/whatever color schooling breeches, paddock boot and half chaps, and a polo, although defiantly not necessary.
Im glad your taking lessons! Its such a beautiful and brilliant sport. Don't worry about what others might (but probably wont) think about it, seriously.
Oh, and I love your taste in horse, that's one mighty fine Arabian ;)