I'd take them separately.
It tends to clunk up when you mix them together.
Atleast for me it does.

it depends on the type or brand of creatine u take. i have done both ..it all depends on ur taste and its abilty to mix. also on convienence. so try both. see what u like.

I usually just throw it in my post workout shake

Take it with water cause u need to take muuuch water when youre on.