Just in case you guys didn’t know already. Latest version of Claymore dual miner (v11.0) added dual mining capabilities for Blake2s and Keccak algorithms.
You will be able to dual mine verge (blake2s) and smart cash (keccak). Miner fee also reduced to 1.5% for dual mining.
Good options as all existing dual mineable algos (Sia, Decred etc...) got ASICS and are not worth dual mining anymore.
I am dual mining Verge with Ubiq as my main coin. You get a bit of boot in hashrate for main coin when dual mining. My rig usually gets 227 Mh/s on ethash but jumped to 231 Mh/s when dual mining. Also increasing dual mining intensity is just increasing power usage and second coin hashrate but not reducing main coin hashrate.