@Al Krow, according to Imelda, in several published interviews, the rockabilly stuff isn't her roots - she started off doing blues, jazz, soul and gospel, and the rockabilly came later.
I went to the first night of the tour in Ipswich on Thursday night. I like the new album a lot, some of the songs are very strong and the performance she gave was excellent. The crowd was probably 50/50 between fans of the old stuff and people who've discovered her music over the last year or so. The set was the whole of the new album, plus Mayhem, Johnny Got a Boom Boom and a couple of other oldies. It's clear where she sees the new direction.
She was backed by a 7-piece band: drums, keyboards, lead and rhythm guitar, trumpet, sax and the excellent Al Gare on upright and electric bass (an Italia Mondial Classic unless I'm very much mistaken). All good players, very tight as you would expect.