I just think if you are going to want 15` with that steel that you are better off strengthening the edge by the secondary bevel. Others may agree, or disagree. Its just my opinion. Keep in mind that I'm reading into it a bit thinking that if your are picky enough to notice a bevel that looks other than even that in all likelihood you'll also notice any chips and dings, especially larger ones on the cutting edge. You will probably want those fixed and then you'll end up doing the secondary bevel to strengthen the edge anyway. Most of the ones I've already sharpened this way for members and non members with folder blades in this steel have been done after chipping occurred in the ones with steeper angles. I've had some mailed to me that had more like 12` angles and anything like a 10` or 12` angle on a thinner blade to begin with could be disastrous really and something that could lead to not just chip outs but fracturing. S30V is tough and strong but the larger carbide size combined with a weaker matrix from the steel being thinned down around them which is what holds them in place is a bad deal around the cutting edge. Its not just S30V that I've seen this with. Some folks have taken D2 blades down thinner than is normally seen. D2 is another with larger carbide size.
Some steels are stable when thin. 13C26, and a few others can be taken real thin with little problem for example but they have smaller carbide sizes surrounded by the steel matrix and are made to do that. Thats why 13C26 is a razor blade steel. It can take it but even it can experience easier edge rolling or chips the thinner they get also only its harder to do and when a carbide or several are dislodged in that steel vs when this happens in a larger carbide size, well, its not near as noticed by your eyes. You'd need a scope to see the evidence of it unlike S30V or D2 where the chips would be visible to the naked eye in most cases.
STR