Well Arnie: Check the album notes on, just a for instance, Annie Brigg's recordings, then check how many of the songs she learned from the Traveller community she passed on to Plaxty - DeDannan, Paul Brady and all the other bands she influenced, check the album notes on the old folkways recordings of Traveller music and you will find many of the Scottish ballads sung today have been passed down to you through the Traveller community. Travellers have become more reclusive due to the kind of prejudice vissable in this thread. As a result, one cannot just drop in and grab a tune or two. But, being a good neighbor to Travellers, will put you in remarkable cercumstances. In the US, most writers believe that the Traveller community has not kept the music alive, and yet, I was at a Romanichal wedding, a while back, and was surprised to find, even among teanagers, a huge repitory of ballads. I heard a great version of the Butcher Boy from a young Romanichal man, in his late teens.
But, you who put the walls up, suffer the cultureal loss, and often are too closed to know or apriciate what you are missing.
As to the pavers you mention... some in fact, are Romanichal and are completely a Romani people, speaking the same root language, for example the word for dog, Zhukle in Vlax Romaness is Yukle in Romanichal, or in the origion storries and some other traditions you see cultureal drift from the Romanichal community into the Irish Traveller community. So, just because you are unaware of a connection, you may concider not being dissmissive that a conection exists. Irish Travellers have a separate origion, but as both were racialized as "Gypsy" the two communities have interacted for centuries. New Age Travellers are a different matter, and to my knowlege they are not pavers. In the US, folks refered to as refs, a sort of proto new age Traveller, in that they fell in with Travellers over a few generations, are sometimes pavers, but, they also can become more an more Traveller in culture as generations pass.
Cheers
Larry