I'd be interested in such a building. Anyplace still using Phoenician script? Aside from the Samaritans, whose script has evolved some as well... Wow.
Yes, "Wow" was exactly my reaction too. I've put some pictures up at http://www.smontagu.org/PalaeoHebrew/
It's interesting that the inscription uses modern Hebrew spelling conventions and writes ××××× with a mater lectionis, which it doesn't have in the Masoretic text of Kings.
The glyphs look to my unexpert eye more like Moabite than Paleo-Hebrew, but of course it's a work of art rather than a scholarly presentation, and the sculptor may have chosen them from aesthetic considerations.
Next time I'm there, I'll try asking some random passers-by what they think the script is. ;-)
Simon