Well, well well...
I got that other (than N900, Pro1) jewel: Motorola Droid xt894. Very cute.
And then, I explored Leste deeper to see what I could/couldn't do with it.
Is that clever: buy, then think? Ahem...

I realised I couldn't do what I need (basic usage + mms with pics, receive ALL sms, sometimes web on the way) at the present development state of Leste.

Once again I fell back to N900 (where I really feel cosy and comfortable with all my kb, scripts and tweaks plus its openness and flexibility).
But still, I need a daily working alternative!

So I brought an Xperia XA2 and flashed SFOS.
All basic needed functions are there, plus terminal, filesystem access and you all, trying and achieving all sort of things on it.

I read about closed source kb some years ago, potential security concerns... Dunno if it is still the case with Jolla, but ATM this OS+potentials are charming me !

I just have to find how to migrate my things from N900 to SFOS.
Maybe a new thread...

Cheers