I looked at those Gimeno Tebas at the Armoury a couple of years ago and did not care for them. I have yet to see someone in real life look good in a Teba. I am not saying it is impossible, but I think it is generally an unflattering shape for most people.
I think a military inspired slim field jacket (M43, etc.) could work well. A safari jacket may end up looking old and stodgy unless it is cut well and / or had interesting details.