Feasibility of HAML + PHP/CakePHP

Is anyone using a HAML implementation for PHP like phpHaml or pHAML? Both projects have seen no activity for about 2 years, and both are < 1.0. Is it feasible/wise to use HAML for a large PHP application, or is it too immature?

Does anybody have experience with Chaml for CakePHP? I played around with it, and it seems to be really picky about whitespace, which I think might cause a few hiccups in a large project with many developers.

I really want to use HAML or something minimalistic like it, but I don't want it to add another layer of debugging problems. Recommendations are welcome.