I've played with Cacko Hybrid ROM a while ago and I've found out that I like much features it has (home on jffs2, qtopia installable to RAM, jffs2, SD), but I didnt like Qtopia look and feel. So basically I took ROM part, added some software in it (patched kernel IRDA for T610 phones, ssh, midnight commander, etc ...) and took Qtopia part from TKCrom 2.0 alpha, made some changes (added cyrillic keyboard from Cacko 1.22, neocalc, time applet, unicode fonts, changed install script to be Qtopia installable also on CF card (i didnt had SD)) and now I'm quite happy SL 5500 user. The rom has features from hybrid but is fully compatible with Sharp 3.10 sync appz (intellisync, qtopia for win), has ipkg old and new, I can use Hancom, Jeode, Opera packages from TKC rom and everything is working quite well. Now I'm trying to add bluetooth support to this ROM and create packages for other Qtopias (1.6.2, 2.1.1) to install and switch between them. If someone is curious I can upload this ROM somewhere for you to try.