Waist: high or jeans

[Scottish Rock]

As a new member here (see my self introduction here) I have a number of questions regarding getting my first kilt that I couldn't find a satisfying answer to. Here is the first one.

I understand that the traditional way to wear a kilt is pretty high on the waist, a little above the navel. Initially I was fairly certain that I would prefer the, I think, more contemporary jeans waist as I thought it would simply look better on me. However, this USA Kilts video:

What Kilt Mistake Makes You Cringe

has made me want to rethink that. Apart from tradition, this picture comparison in particular:

Kilt waist height.jpg

seems like a pretty good aesthetic argument to wear the kilt above the navel if you have a bit of a belly going on, like I do. However, what I'm wondering about is the following:

If you "wear the kilt around the widest part of your belly" as phrased by Rocky in that video, has anyone found that this causes the kilt to slide down?

I realize that the kilt is not held up by the belt but instead by its own leather straps so to speak (or just the top of the kilt if it has velcro^® closures) and I'm not exactly certain where those are relative to the top of the kilt (this may be related to what I have heard being referred to as 'uprise'), but in general it would seem to me that you want the part of the kilt that keeps it up to be just above a part of the body where the body gets wider going down to keep the kilt from sliding down. Otherwise you're having to rely on friction 100% to keep it up.

I'm also wondering if having the kilt's top above the navel isn't going to make my upper body look strangely short. I do have fairly average bodily proportions and I'm 6'3. My legs are perhaps a bit long proportionally speaking but not outrageously so.

I have some more questions about where everything is in relation to everything else on the kilt and your body but I'd first like to know if the kilt sliding down is ever an issue at all so I can make a final decision as to what I'm going to do: be obstinate beyond help and get a 'pants wasted' kilt or get an 'above navel' wasted kilt.