Let me make it painfully clear that Heckyl is not that patriotic, and he almost never wears street clothes. As for Dio... he's a robot. I haven't really worked out what a patriotic robot would look like.
When in any sort of scenario when he would be exposed to extreme cold, Heckyl wears this fur-lined jacket he found in a burned home during the Ishvalan War of Extermination. The rest of his outfit is the same though.
I can't draw, so I use Picrew. I mentioned 13 as one of the ones I was hoping for, but really I just wasn't paying attention. The ones I was hoping for were 1, 6, 7, 12, 14, or 15
I've actually already worked out a female version of Heckyl. Her name is Rikki Heckyl. She's not an alchemist - she's just a normal soldier. She carries her gun and wears her uniform and is just as depressed as the original.