If your going archer, I'd say just be a scout or a ranger, depending on what you want to be doing. Being a warrior/archer nets you a few problems, one being you have the ability for heavy / med armor, but due to the dex penalties you cannot wear it, wasting one advantage. Another being I doubt you'd get those fancy shot skills that the scout/ranger gets (could be very wrong on that)
I don't know, personally, it seems not worth it. A warrior is for HtH and a scout/ranger for range (though I have seen some rangers with 2-h swords, not for me though)
Give it a shot if you've got the time, but thats what I think.