I was on the ATP a fair amount with Manx Airways (JE). My log book (a spreadsheet) tells me that the first ride was LHR to IOM October 1994. They used it on the midday rotation with the 146 (MIMA) on the morning and evening.
Mostly, I was on it from LTN to IOM in 2000/1/2 but that seems to have been it. As pax - it was OK. But I have read in the forums from drivers that 'the wings were in the wrong place and you had to know what you were doing'.
When I was on the Island in September, I saw a couple on stand as freighters - can't recall the name of the company but the IOM thread in A.A.&R. will know.