Its worth pointing out that the version of Showcase that is included in the 23081 rom is actually the version mean just for WM 6.5.
There is a newer version meant for 6.5.x builds, it handles the new style X location and such. Only problem is no settings program you have to edit the registry to change options.
http://forum.xda-developers.com/show...03#post4030903
Also ... stability wise I have been chugging along with the Nov 3 build of 23081 since the morning it was out and except for one or 2 programs not closing properly and some delays when I switch to landscape and type before the screen changes, its has been very stable for normal use.
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Oh yeah, another thing worth noting. The htc Wifi Router (not WMWifiRouter) works just fine with this build. I didn't try the usb tether but I installed the WifiRouter and it works right off. A word of caution ... it straight up eats battery life like candy
keep that in mind but if your in the field with a random laptop and no usb cable it will do just fine.