Saying dGB doesn't support apps2sd is disingenuous (and wrong). It supports standard Android apps2sd but it doesn't support apps2sd+ (I realise you did say on an ext partition, which implies the +). The reason it doesn't support it is that it doesn't need to. The ROM is so small you get LOADS of space and can still stick data portions of big apps on the SD card - you do have to use a custom HBOOT to get that, though.
I've been using it for a long while now and I can't remember the last time my phone crashed. Highly recommended but do understand it's cut-down and you will have to install a shed-load of apps to get your phone up to spec, the great thing is that you get to choose which apps as they're not in the ROM.