I'm now also interested in the Entwistle Nemesis AFG because it's the only pickup I know that uses a combination of ceramic and alnico magnets. Does any other pickup maker do this? How does the Nemesis compare to the HDN or other pickups that we'd be familiar with?
I think Gibson Tony Iommi signature pickups are also with mixed alnico/ceramic magnets.
I have tried some Entwistle pickups in Ibanez RG270 and Epiphone Explorer. In Ibanez, I first replaced stock Powersound humbuckers with Entwistle X2, which gave brighter sound, but still not what I was looking for. Then I tried for a short moment Nemesis (ceramic only magnet), but I didn't hear much difference. But I immediately fell in love with HDN sound so I installed a set of HDN's plus XS62N middle single coil. The sound is warm in a similar manner to classic PAF-like humbuckers, but has much more power. The sound is not very sharp (treble-rich) but is good both clean and overdriven. To my ear, the output of XS62N is higher than of HDN in split coil mode.
Now, I'm looking for something cheap but good-sounding for Explorer. The stock Epi Alnico Classic Plus sound nice, but lack some power. On the other hand, Epi Alnico Classics (non-pro) taken from Epi LP Studio are a bit muddy, maybe they have enough power but at the cost of clarity and, to my needs, lack some top end. I tried Tesla Plasma-3, high power, but even less treble, so I probably won't keep them.
In this Explorer I tried Entwistle X2 and ceramic-only Nemesis. The sound is cold, slightly soul-less, but has enough power and top end that I need. Nemesis has more treble. Now I'm going to try Nemesis AFG with mixed alnico/ceramic magnets, Dark Star ND, and, for comparison, "Artec Alnico V humbucker", whatever it is:
http://www.ebay.co.uk/itm/111075420202?var=410177402886&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649If you know what to expect, please let me know before it arrives.