I'll say up front that I don't currently have any guitars with rail pickups. I've tried the Joe Barden, Seymour Duncan, Bare Knuckle and DiMarzio rail types over the years but I've only found a couple that I really enjoyed.
My introduction was through Joe Barden's pickups and then, years later, I found the DiMarzio Chopper & Cruiser models. I really don't care for ceramic magnet pickups and was bit surprised when I found that both DiMarzio pickups were using them. The Cruiser, (neck or middle pickup on the Ibanez Andy Timmons models), had surprisingly good tone I really enjoyed, but, I thought the Chopper had a ton of added potential. It had power and good note definition like most ceramics but didn't have that lack of feel or emotion I attribute to ceramics. That alone grabbed my interest.
Most ceramics, to my ears, have the soul of a stone depressed into a bog under a section of log that was once bored into by a man with a large drill and strange desires. Yet ..... the Chopper didn't sound debased. It sounded very much in charge, full of vim and vigor and ready to perform for the crowd. Later on I tried out the Chopper T and liked it even more. Not that I would recommend it to anyone wanting vintage Telecaster bridge pickup tone. I could end up like the log I mentioned earlier.
I've considered using a Chopper T in the bridge of a Nashville 3 pickup Telecaster so I could have my favorite Nashville Tele tones and then slam it into the first position to cut through the mix, (or anyone standing in the way).