I just use tung oil or a wipe on poly from minwax. Tung oil seems to soak in the wood better.
I have used super glue to fill just the gaps and yes, I tung oiled right over it with no problems. I have never wiped the whole handle down with super glue like some of the others.
A good example of why I like tung oil... My dad's bow I just built, well last night I got a bug up my butt to add on an insert on the handle so you can add a stabilizer bar to it. Well, doing so, I scratched up the handle a bit.. so I sanded down the bad areas and then re applied the tung oil.. can not tell where I did it!
Don't know if a spray on poly will let you do that.