Yes, we've got an 'N' SWB reg one we've had for 5 or so years and before that we had a LWB one, both diesels. We really like them, they are very reliable and easy to drive. They tow well. We have an Ifor Williams 505 but before that we had a 510 and they tow both fine. We had Daihatsu's before that but prefer the Isuzu.
I have an inported LWB one and I love it. The older ones (mines an M) are perfectly fine to run on veg oil too which makes them cheaper to run. The legislation changed recently so users dont need to declare it for tax purposes (up to a certain level). I have never towed with it but plan to in the future. It is ace off road and very reliable.
Be careful using vege oil on the newer models as with most high tech diesels you may find your engine blowing up. You need to use ligit diesel and the proper oil otherwise you will have problems. You can tell I am from NI where a number of Izuzus engines blew up due to dodgy fuel.