Just to show that bisq indeed supports any base currency <-> XCN trading pair (e.g. BTC), please see this screenshot I just made.
XCN is fully supported by bisq!You just need to start the app and have a look yourself. The
http://markets.bisq.network/ site just shows pairs with recent activity. Volume on bisq is still nearly 0, because everybody seems to think that XCN is not supported by bisq.
I can guarantee you, it is. I've added it to their code base myself

