Yes it's very well possible, but you can tell it's not easy else it would have been done. The XPERIA chipset is also used in existing Android driven phones and Linux has already been ported to several other HTC devices if I am correct (remember, most of the production/development of the X1 has been managed by HTC, to xda-dev it's more an HTC device rather than an SE device)
Correct me if I'm wrong but at the moment ARAN is also leading a separate effort to port Linux/Android to the X1?
At the moment SD card and hardware keyboard are working, the colour bug is fixed and output alignment has been fixed so that the image isn't upside down anymore? Phone is working but Wi-Fi isn't yet, right?
What's the centre/hub of the porting effort at the moment? For a while the TouchHD-Android thread seemed but I kinda lost track.
Could anyone here in this thread who really keeps track of the progress give us an update on these matters? Thank you.