IF they don't compromise much on quality. I have a LG G6 and the wide angle lens is REALLY useful... but - and this is a big but - the cameras are a bit meh. LG used the same sensor for both rear cameras, and neither are great. They are good... but good in a 2015 sort of way.
Based on that, dual cameras that add functionality vs. improve quality, I'm over.
How are they using the two cams? I haven't found a lot of info on it so far other than a vague throw-away line about how they will have a color/B&W pairing like Huawei uses.