BTM SOLO mining at 15k+ on a 2080ti is still a solid income even in the middle of ASICS.
The miner is still great

Dual mining depends on your memory, if you don't have a good Samsung one that you can push at +1000 / +1200 the Solo BTM will still be the best.
(Like me with my shitty Micron at +600 max only).
@nebutech I don't know if you have pushed the BTM at the maximum but the Asics seems sold out for now and the blockchain hasrate pretty stable since April.
If you can squeeze a few extra perf on the BTM, the RTX will still shine on it, even when the actual performance is pretty amazing already.