There are plenty of other profitable coins to mine once eth goes POS.
That does not mean there is still not risk involved.
But currently I believe you are very likely to reach ROI before POS lands.
After POS, assuming the hardware can still mine a coin, it can be re purposed, right?
ROI should be met within about 2 months or so...Nobody knows when POS comes, but in 2016 people said it would already be here, then people said Nov 2017...so whats the consensus?