Corduroy blazers can be worn casually - and 'casual' on the men's forum means something totally different than what it means here. I think it's pretty obvious, and people don't really need you to point them in the "right" direction. Thanks, though.
I have had a corduroy jacket made for me. And, as long as you have a tailor who understands what you're going for or is willing to make concessions, you should be fine. I find its best to a) bring something you own that fits well that you would like your jacket to be similar to and b) find pictures of jackets you like. Mine is a deep olive green, 2 button, thin lapels, with functioning buttonholes (i really like this detail), double-vented, some waist suppression ( but not a whole lot), ticket pocket. Yeah, it's got a little bit much going on, but if you're getting one custom made why not make it interesting, right?