I have not used the Sea Life but I have and have used a GoPro. I have also used a Canon G11 in a Canon Housing with external flash for 'proper' photography.
The GoPro has produced great pictures and video, and actually is fairly simple - just point and switch on, you could mount it on something and use it fixed, or use a Goodman handle and just point in the direction you want to shoot. But that for me is the downside of my GoPro, I can't see or compose what I am shooting because I don't have the video back on mine.
It looks like the Sea Life lets you see in real time what you are capturing, so that for me would be a plus. However as a newer diver therein lies the danger
If you have a GoPro and switch it on and leave it through your dive it won't distract you too much. But if you take the Sea Life camera along and spend your time looking at the screen, altering controls and faffing around composing, that is when you are at risk of loosing control of your dive management - whether it be depth, time, buoyancy or your buddy !
So I would echo what others have said - for any serious photography wait until you are completely instinctive with your diving so you don't have to concentrate on it, then start to pursue photography when you are. But if you just want to record the dive for posterity, then by all means buy a GoPro, strap it on somewhere fixed, switch it on and leave it alone during the dive. Don't even think about it until afterwards, don't fiddle with the controls, or do any more than point it in the right direction, and you will be fine PROVIDED you don't get tempted to do any more than that right now until you are more experienced.
My GoPro housing has never been a problem, it has been to 40m several times, after each dive I just religiously clean the salt water off, remove, clean and re-lubricate the o-ring when I take the camera out, and I have never had moisture in it.
I have also seen new divers engrossed in cameras have uncontrolled ascents, lose buddies, and in one case get so engrossed in what they were doing they forgot to monitor their air and had run very low before they discovered it. They had to call their dive and make an ascent to the surface accompanied by a DM to make sure they didn't run out on the way up !
So it genuinely is not just old fogeys trying to spoil your fun - cameras cause all sorts of problems - but so long as you understand the risks you will be fine. P