@ Intereceptor121: You have practically convinced me to abandon Canon G16 and switch to an RX100

I found one on sale and intend to go for it tomorrow. However, one big concern remains in my mind as explained below..
I have read a few of your comments and instructions for setting the Custom WB, which were spread over a period of time and between this forum and your blog site, and must say, I am now more confused than before. How bad is this issue really? Somewhere you are suggesting that the Auto White Balance when shooting video is as good as a custom setting. But then again, in a different spot, you say that setting custom WB on Rx100 (RX100M2?) is a "disaster", with errors and other issues, not to mention the great number of steps required to actually even try to get there. I must admit that at some point I got lost on whether you were talking about the RX100 or RX100 M2. There may be a difference between the two. So, my question is basically: how bad is it really for RX100, which I am considering now? Both for video and for pictures. Does the auto mode really work reasonably well? For an occassional diver and even more occasional photographer, is the sequence reasonably easy to memorize and perform? I do not know the Sony interface, and therefore not sure what to expect. I have heard opinions that it was not intuitive at all.
I have seen samples of the low light performance for the RX100 and it is truly amazing. However, there are other issues to consider.. I will be shooting a lot in cold waters ranging in colour form from near tropical blue to strong green, and at depths of up to 35 m, and the ability to white balance is absolutely critical there from my prior experience. I will be also wearing gloves, either dry gloves with inserts, or 5-7 mm neoprene, and am not too sure, if wearing this gear I can pull off the required sequence on an Ikelite housing, with its small pushbuttons. And just to narrow the choices here, Ikelite is all I can afford for the moment...