Liffey Bluff alternative access?

I'm wondering if Liffey Bluff is doable from the Lake Hwy, or if the scrub is just too nasty. Has anyone tried that way?
I gather the old track straight up from the picnic area is too overgrown, and the km of steep scree from the Liffey River track wouldn't be so enjoyable when wet and slippery.
I gather the old track straight up from the picnic area is too overgrown, and the km of steep scree from the Liffey River track wouldn't be so enjoyable when wet and slippery.