I know electric fan clutches are available for the 5.9L Cummins. I remember an episode of Two Guys Garage when they installed one on their Dodge truck. I don't know if there are any available for the other light duty engines or not.
I think the electric clutch is the perfect answer. You get the best advantages between the electric fans and the oem fans. Another benefit is the ability to manually engage the fan and let it run when you want. If you're approaching a large hill and you'll know the engine will get hot before reaching the top, you can flip a switch and engage the fan to get the maximum cooling before you get into trouble.
Casey
1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter