I thought the consequences of the sex was fairly decent and not really all that plot-hole-ish. The all ages versions (anime and PS2) had the RAWR DRAGON scene, and seriously, why would the RAWR DRAGON scene make Saber any more aware of her identity as a female? Amongst other things.
Mind you, the sex scene was still completely off, but what came after was important, so meh. --- http://www.youtube.com/watch?v=AV7PNOQ34k8 Mahou Shoujo Lyrical Nanoha StrikerS - Set up! Project TD would be proud.