In a word, wow. Benjamin Baugh has outdone himself. The Kerberos Club is perhaps one of the most real and alive settings that I've ever encountered. I've always found it a little tricky to get comfortable with external settings, but the Kerberos Club takes on all manner of strange members. There are plenty of odd folks who inhabit the club and all of Her Majesty's territory.
While I think the setting is phenomenal, I'm not certain that Savage Worlds really has the full flexibility to capture the wild variability of the various inhabitants. I haven't read the Wild Talents version, but I have suspicions that Wild Talents might be better and I'm pre-sold on the forthcoming Hero System version.
If you're solid Savage, by all means pick up this book; the content is stellar. But if you're flexible in choice of system, the other options might be a marginally better choice.
[4 of 5 Stars!]