Yes, in fact the "logic level" ones are more speacialized. Only the Nfet needs to turn on with a Vgs of ~1.5V, and since its pullup is ~100k, who cares what its on resistance is... The PFet in your circuit gets 5+V, so it doesn't need to have a low Vgs, and as long as it has an on resistance that is small compared to 100K (<=1K), then it will not degrade the accuracy of the ADC reading. I would dump T2, and replace it with an NPN transistor. It has a Vbe "threshold" of only 0.65V, and low-leakage when it is off...