For what's it worth, if you stick an Al13 head on a steel handle, the head is light enough that it probably won't affect the balance much, i.e. it would likely handle like the handle itself.I have wondered if the heavier TI version would be more to my tastes, but getting one here is likely to cost the equivalent of about $330 once shipping, taxes and duties are accounted for. I am not prepared to pay that much to find out, especially since the odds are still against my getting on with it due to the head profile and I get perfectly good shaves from traditional razors with a similar weight that cost about 1/15 of that price. I think if Henson made a razor from heavier materials that was offered at the same price as the AL, they would probably find quite a decent level of demand for it amongst "hobby" shavers who prefer a more substantial razor.
As far as the pressure is concerned, I can only speak from what I found - different hair, different experiences I guess.
I respect what Henson are doing and think the quality of the product is A1. As I have said elsewhere, I would love to seem them make a razor with the same philosophy around blade clamping and high standards of machining, but a more traditional head profile and heavier materials (e.g. brass). That would really be something!
That's assuming you have some spares kicking about to experiment with.