I don't really think it'd be possible on that fork. You'd have to change out the cap for the lockout as there's no place to mount a cable like on RockShoks.

As for whether it's worth it? Well, do you often transition between fire road/pavement to rocky trail? In all honesty, all of my friends who work at the bike shop and have remote lockouts (on their $4-$8000 bikes) say they almost never lock out the front suspension on their bikes. On climbs the front unlocked is nice because it's hard to pop over big rocks or roots if it's locked. (Ones that can't be avoided.) Having the suspension not locked also makes it easier to not do a wheelie going uphill (a common complaint of new riders.) I personally have never locked my front suspension. I have no reason to. All of the trails I ride on are rocky both up and down. (And I almost never ride my mountain bike on a road.)