Dualshock3 Mac L2/R2 Trigger Analog Values?

Using Unity 5.3.0f4

OSX 10.11.1

Dualshock 3 Controller

I'm wondering if it's possible to access the raw/float analog values of the L2/R2 triggers (i.e. pressure sensitivity) on a Mac

On Windows, I'm able to use Axes 9/10 (or combined Axis 3) to get the float value.

But on OSX, it seems like I can only access the L2/R2 triggers as button bool values.

I tried reading from Axes 5 & 6 as recommended here: https://www.reddit.com/r/Unity3D/comments/1syswe/ps4_controller_map_for_unity/

I've tried InControl, as well as the default Unity Input Manager, and only seem to get any axis info for the 4 associated with the Left and Right Analog sticks.

I thought this might be a shortcoming of the default driver, but this HTML5 gamepad test page is reporting the expected analog values for the same connected ds3 controller: http://www.html5rocks.com/en/tutorials/doodles/gamepad/gamepad-tester/tester.html

(^ In Chrome, at least. In Firefox it's binary values, and it doesn't seem to work at all in Safari.)

I feel like I'm overlooking something, but maybe it's a Unity implementation bug?

Any help would be greatly appreciated. :)