First of all, thank you so much for this app, with the new Tasker support I'm able to do so much more with the watch than before.
For Morbyd and everyone else interested in using Tasker with this I'll write up a Tasker profile step by step guide that's a bit easier to follow than finebyte's quick and dirty instructions.
Create a new Tasker profile to initialize the button names. I named mine "Pebble Glance Initialization" for example. Select Event, then system, then Intent Received. Under Action type in "uk.co.finebyte.pebblelgance.TASKERINIT" without the quotation marks. Leave everything else in this menu blank.
Create a new task and name it or leave it blank if you like. Touch the + on the bottom of the screen to add a new action. Select Misc, then Send Intent. Under Action type in "uk.co.finebyte.pebbleglance.TASKERSEND" again without quotes. Under Extra type in "msg:" followed by the names of your three buttons split up by colons (the : symbol). An example is "msg:wifi:silent:loud" where the top button is named "wifi" and the bottom button is named "loud." Hopefully you realize to leave out the quotes again! Leave everything else blank.
You are now done creating the button labels. Time to move on to create the Tasker profile that will actually do something when you press a button. Create a new profile and once again select Event, then system, then Intent Received. Under Action type in "uk.co.finebyte.pebblelgance.TASKERKEY" note this isn't the same text as from the first profile. Leave everything else blank.
Now you can create tasks using Tasker's built in IF statements. Touch + and select Task, then If. In the textbox that already contains a % symbol type in "key" after the % so it should look like "%key" without quotes. Leave the middle button showing ~ and on the right side text box type in either "TASKERTOP" "TASKERMID" or "TASKERBOT" to setup the action you wish to take for the corresponding top, mid, or bottom buttons. Then do whatever it is you were planning on doing with the buttons and afterwards go back to Task, then End If. You can now do the above steps within this same task a second and third time for the other buttons. Just remember not to get your IF statements mixed up because you forgot to put in an End If at the end of each button action. You are now done!
Here's a little something simple to try out for one of the buttons if you're stumped on what to do with your new-found power. Try having one of the buttons load an app such as Google. The simple name of Google is actually Google Now. The beauty of this is that if you have your phone on your desk or in a car mount, you no longer have to touch your phone. You can press the button on your watch which launchs Google Now, then say "Google" to activate Google Now's speech to text function.