Regarding the Subtronic with exchangable battery:
No delivery date. Sounded like they were trying and build some prototypes!?
They are aware of the problem and work on a solution...
Subtronic has a paper that certifies that it is not dangerous to transport the strobe on a flight. The strobe is not designed to be opened by a customer. The manual states that it is dangerous to open it because of the high voltage parts inside...
This is a no-go for many users...
Hartenberger is a good strobe in a similar high quality.
You can remove the whole battery pack for exchange it or to recharge it if you have only one.
In some modells you can change the reflector and light color too.
If I would have to buy a aluminum housed strobe tomorrow I would probably go for a Hartenberger instead of a Subtronic.
I ordered a set of Inon 220... I think it's the right choice for me...
Cheers Torben