I don't play a lot of gish, but in games of many genre, I tend to play support characters. For me, I want to have a character who's not the best at Everything, but I want to be versatile. I wouldn't be a fighter/mage because of some Sick Build, but usually because there's some story behind it - like when I realized in 5e you can cast spells in any armor you're proficient in, so I was like... a mountain dwarf wizard - awesome.
I think I am what Robin D Laws called 'the pro from Dover' when it came to player archetypes - the guy who has a full bag of tricks. Not because I want to spotlight hog, but because you need versatility, and if the rest of the table is building worrying about DPS etc, a lot of stuff like non combat utility gets overlooked.