SB-28's (external power)

[NielsK]

Did anyone consider using a Nikon SD-8 or SD-8A Battery Pack together with a SB-28? (A=European market, with different power plug) According to the SB-28 manual the recycling time will thus be shortened from 4 to 2.5 seconds, full power recovery. The pack holds 6 AA batteries wich looks like some xtra power although the remaining 4 in the flash get a different function: 'The Speedlight itself should be fitted with four batteries as per normal as these will power the Speedlights electronics - LCD, zoom head etc'. So, not the dreamed power extender but the short recycling time nevertheless is appealing. What do you think, is it worth buying one?