If i were to enchantthese with the new boar enchant, would it stack with the equiped increased run speed?

If you don't know if these are worth the honor and marks, here are some alternatives:

similar:
http://www.wowhead.com/?item=15389 nearly same stats (12 agi, 12 stam) but -12 attack power and no increased run speed
http://www.wowhead.com/?item=17728 drops in Maraudon

rogue only:
http://www.wowhead.com/?item=20255 level 50 rogue quest

higher level:
1. http://www.wowhead.com/?item=12553 (lvl 54)
2. http://www.wowhead.com/?item=16711 (lvl 54)
3. http://www.wowhead.com/?item=24694 (lvl 57) with ..of the Bandit ( +14 Agility, +21 Stamina, +28 Attack Power )

I won't recommend the end of Blackrock Depths (1.) or Scholomance (2.) with level 54, so the first real chance to replace these boots is with level 57.

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高地皮甲长靴

物品等级：27
拾取后绑定

脚部	皮甲

4护甲
+2 [敏捷 or 智力]
+4 耐力
+5全能
耐久: 65 / 65

装备：略微提高移动速度。
需要等级 21

售价: 1 8

当玩家选择以下专精时可获得本物品：

如果你转阵营为部落, 这件物品会被转成污染者的皮甲长靴。

[Vendor Locations]

[This item can be purchased in] 阿拉希高地（2）.