not sure what weak liquidity you think there is in VX...
In the ETH the VX trades only several contracts in a 5 minute window a large portion of the time and slippage will cost you. The other ugly thing is you are required to use a stop limit. VX is a bear for trading in the ETH.
I can get short using the ES/NQ/YM with far greater liquidity and not have to worry about slippage or the stop/limit rule. Even if you have an extra tick of slippage on the YM/NQ you only eat $5, on the VX it is $50.
In the ETH the VX trades only several contracts in a 5 minute window a large portion of the time and slippage will cost you. The other ugly thing is you are required to use a stop limit. VX is a bear for trading in the ETH.
I can get short using the ES/NQ/YM with far greater liquidity and not have to worry about slippage or the stop/limit rule. Even if you have an extra tick of slippage on the YM/NQ you only eat $5, on the VX it is $50.