One thing to note: If you can use LA buyoff then a Goliath offers the same thing as Leap of the Heavens, and MORE. Even without buyoff it's a staple race. While it does seem initially strange to use one for a Swift Hunter, it's actually not so strange - more Str=more damage. Powerful build is also nice to use larger weapons. Mountain movement ensures skirmish even on hills. And you can qualify for Knockback, which is a VERY good feat, even though not quite as useful for Swift Hunters.
Now the deal with Travel devotion: It works for 1 minute. And by the CC rules to get more uses you have to permanently expend your turn attempts, 2 per additional daily use, IIRC. With +1 Cha and 3 base attempts that's three uses per day, i.e. 3 fights. Add extra turning for two more. At that point it's very unlikely you'll run out, and you can get it all from one level of (cloistered) cleric. (Undeath and Travel domains.)
There is also a funny interaction between permanently expending turn attempts and items that grant temporary Cha bonuses - or even direct turn attempts. For instance, borrow a cloak of Cha +4, and you gain 2 turns. Now expend those permanently. (You're already at 0, because all the others are already gone.) And then give back the cloak. You can't get a negative number, nor can those expended turns be revoked, because there are no more causality checks involved. (I guess this isn't likely to work in a real game, not more than once at least, but... IMHO it's RAW.)
Of course, the much better way is just convincing your DM to change that rule from permanently expending to just expending per use.
IMHO WoTC did the giant chicken with the mounted scout: They just didn't want it to happen, because you always do ranged full-attacks while mounted. And I think they wanted skirmish to be a single-attack mechanic, so that the painful inefficiency of the main combat character classes at dealing damage didn't become even more obvious.