Quote from sle:
I reached out to a former colleague and he said they'd cross with me on the exchange, if I quote in sufficient size (at least 100k vega notional, I'd guess). On the other hand, he felt that it would be unlikely that serious liquidity develops there unless retail/non-funds traders will get involved, which he felt was improbable "to confusing and mathematical for them, they would only care if it was packaged into an ETF". I am very hopeful, but not holding my breath,
Spreads are reasonable, 0.25 vol is on average what you would get in the OTC broker markets. It's the lack of volume that is bothering me.
PS. Btw, I promised to post a history of OTC variance swap quotes, will do that later today.