allies playing cards "as a vampire" + blood cost?

Allo.

Stooopid question folks, but if an ally can play cards "as a vampire" can it pay blood cost with life, or would it need additional text for that?

No extra text needed.

Rulebook 1.6.3 wrote

Some allies have the ability to play certain cards "as a vampire." In these cases, the ally is treated as a vampire for all effects generated by the play of the card, including duration effects (like "for the remainder of combat"). The ally's life represents his blood (to pay costs, for example). Any blood he gains or loses as a vampire equates to a gain or loss of life for the ally. For purposes of that card, the ally has a capacity of 1 by default (for use if the card requires an older vampire or a vampire of a given capacity). If the ally gains life in excess of his capacity, it doesn't drain off, and if the effect inflicts aggravated damage on the ally, he burns life as normal. However, if the effect would send the ally to torpor, then he is burned instead. The ally is treated as a vampire only for the effect generated from playing the card. In particular, the ally is not treated as a vampire for effects the card has from being in play (like "the vampire with this card" effects).

Thanks.

Knew it was a stupid question, even tried to read the actual rules, apparently not paying to much attention (mayby I shouldn't do it while at work).

Just in case it helps...

The allies used to need their own special text for it. (And so many old cards do have the text.) But LSJ eventually put it as an option in the rulebook, to simplify the card text. No point wasting card text on standard stuff, when you could be giving them nice abilities instead!