I did ask them whether the time was logable under the JARs when I initially phoned them, as potkettleblack has said they offer an option of an extra $20/hr payment for all P1 time, rather than the 50/50 split portsharbourflyer refers to.
They claimed that if I paid this extra, and was flying as P1 for the entire 100 hours, with another guy flying as safety pilot / P2 (who would be logging the hours under the FARs) I would be able to log these hours under the JAA system, but I'm a little concerned that even if I'm PIC the CAA might disallow the hours due to not allowing more than one pilot to log hours in what they see as a single pilot aircraft (even if the other pilot is logging them under FAA regs).
I certainly wouldn't believe the hours were loggable if they were flown as P2/Safety pilot, however, since they are claimed to be all P1 hours I'm curious. Surely the hours don't need to be solo to be logable under JAR - isn't it enough for me to be PIC?
Cheers.