Your right Rainboe flap 10 does work well as its at the same mvr speed as flap 5 and fully deploys the LEDs and no gear warning horn either and I quite often use it. However if you have to maintain 180 kts for ATC or the procedure then its not a viable option for a good deal of the approach as your useing flap as drag which is frowned on by the company and in my view is poor airmanship.
Personaly I'm quite happy to use brake and flap, often you find you need it just to keep the speed under control or to get it moving backwards then your able to stow it again. Dropping the gear will work but once its down you tend not to bring it back up so in a-lot of cases that will mean dragging it in for a stretch burning more fuel and making more noise. Certainly not wrong to do so. Cats skins etc