Discounting stray capacitance of the components in question,
Yes.
In one position, the choke's leakage inductance acts in series between the reg-touching "1" and the JFET-bypassing "1". This creates a three pole lowpass, but whether it's truly good or bad depends on the damping, which isn't obvious here (it may oscillate like a seesaw -- good reason to use a tant at the reg).
If we include stray capacitance, then one is better isolated from the JFETs, while the other is better isolated from the input cable. Which... really isn't saying much at all (if it's a reciprocal filter, which it should be).
Tim
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Seven Transistor Labs, LLC
Electrical Engineering Consultation and Contract Design
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