I realise now that the original question I raised was silly really.
It's funny that, as a music listener, I generally don't really care how I hear the drums. I have just listened to a few commercial songs, from early Sabbath to Opeth's latest, and how the drums are panned (or not in the case of Sabbath) all over the place.
It was then that I realised that, apart from a couple of songs where the drums are panned (Home and Minor by Oceansize has all of the drums elements panned well over to the left), I have never said to myself, "why on earth is the ride not on the left in this song."
Again, the only reason I raised this question in the first place is because BFDeco has the option to switch perspective.
And, further to that, all of the drum VSTi I use have their kit elements panned (except for those you naturally expect to be in the centre of course).
What is clear to me for the future, is I will be toning down the "out of the box" pan setting from now on, bringing toms and tins to a more, but not quite, central location.
cheers, and thanks for all your thoughts
andy