Who do you wave at?

We're looking at the Wild Camping forums tonight, which we came across via the Do Your Dream blog, and there's a conversation going on as to whether motorhomers wave to each other, and how discriminate or otherwise people are.

This provoked quite a discussion on our part - I'm fairly bad at noticing what's going on in the other direction when I drive (this is probably a bad thing, thinking about it) so I'm slow to spot fellow campervanners and tend to miss my chances, but the other half is much more switched on and ready to wave (or not wave...read on...). 


First off, we don't wave at VW "veedub" camper vans as we're not part of that gang (although I have to say I feel guilty if they wave at us...sorry people!!) - however here's who we definitely would raise a cheery wave to:

 - Other Bedford CF camper vans, natch - although its a rare occasion we pass another Bedford camper, so we reckon this has only happened three times!
 - Bedford ice cream vans - more prolific on the roads, although the people driving them sometimes don't understand the significance of their vehicle, so its mostly a one-way-wave here
 - Bedford truck like the campers, you don't see these often and it's something the Husband is much better at spotting than me
 - Finally, pedestrians sometimes wave at us (especially kids) and we always return these as it's lovely to see people liking a Trevor drive-by!

If you're a camper van owner, what wave-rules do you have? Or are you happy to acknowledge any camper of any type?