Went "some time" without Internet access ...
Until spell points get in the mix and that rule you are suggesting shatters to bits

.
There are things I shouldn't do while sleep-deprived.

Both of those progressions are more valuable to the vast majority of players than any other column except maybe BAB. It would become a comedy act about med/high, high/high, or high/med skill point and vitality progressions. You'd never see a low value again, nor should you.
Well, the possible progressions are {low/low, low/med, med/low, med/med, low/high, high/low, med/high, high/med, high/high}; I'll disregard {med/med, low/high, high/low} because they're the ones already in place (not that I'm arguing for eliminating them, to the contrary), and {med/high, high/med, high/high} because they're the ones you'd already expect to see.
That leaves me to argue in favor of {low/low, low/med, med/high} - won't argue for low/low, but I do think a bunch of backer- (especially backer/combatant, with low skills/med vitality) and/or wildcard- (especially spellcasters, with med skills/low vitality - for example, I think the mage should be here) -based concepts could use one of {low/med, med/low}, to free points for Lifestyle, Legend, spell points, possibly other things.
Do note that: A) I'm only taking about "low skills" at all because it's a lot better than in "that other game", and B) I recognize it might be fairer to price skill points at
two points per increase.
Also: snoop progressions?

Errata?
1)I'd thought there was no errata past 2nd printing. Was evidently wrong, and this may serve as a warning against crack.

2)Still, the second printing errata only mentions a change to the
sleuth's initiative (which I don't understand, as it already is equal to the scout's), making no comment on the snoop's base progressions. Or did I miss some errata not in the Downloads section? Either way, thanks.