Quickies once a while are great but they (imo) should definitely be in the minority of your sexual experiences.
As far as sex goes, I like long drawn out sex but I also like shorter, more goal-oriented sex too. I think that once some sexual trust is built back up between you and your H, you will be able to indicate that you just want a shorter session that night without him thinking the worst. But right now, I would offer the quickies in the following manner: You: (before you hit the sack and with a playful tone in your voice and a smile on your face) "Wanna quickie?"
What you want to avoid (again, imo) is the following version: You: (at bedtime and obviously exhausted) "I am not up for full blown sex, but you can have a quickie if you want it."
It is all in how you offer it. Really this goes for a lot of situations and not just sex. If my H offered to do the dishes but made it clear that he was doing me a HUGE favor, I'd prolly tell him to leave them and secretly be resentful and bitter about it. But if he cheerfully offered to do them, I'd think that he was a superhero.
