Space-charge Tetrodes in Inverted Mode ?

[zesak]

Is it possible to connect space-charge tetrode in inverted mode ?

This would be for possible SE parallel OTL mini amp (inductive or resistive load, and, say 16 or 40 ohm speaker).

Any existing and/or working designs like that out there ?
(I am aware of several space-charge mini power amp circuits but have not seen any space-charge tetrode inverted mode designs).

[armdnrdy]

Here's a dual one you can experiment with if you don't mind the price!

http://www.ebay.com/itm/LOEWE-2H-DC-DUAL-SPACE-CHARGE-TETRODE-1926-GERMAN-MADE-/160537981210

[zesak]

Interesting tube,
however, at cca $1,800, I think I'd rather stick with 12K5, 12DS7, 12DL8 ......

[zesak]

I am also wondering if there are any Russian military space-charge tetrodes.
Any idea ?