Fideliums look more fragile than they are. However, finger tightening them or going a little easy on using a wrench to torque them down, is probably prudent. Perhaps because of their lack of connectors, their use would be contraindicated if you rotated speakers in & out of the room daily, but other than that, handle them as you would with any other speaker cable.
Resistance suppositions are fine, but when I compared Nordost and Iconclast speaker cables on my SoundLab's (which go as low as 2-ohms), the Fidelium's won. Electrostatic's in general like to "see" speaker cables with Low Capacitance, Low Inductance and Average to low resistance. Nordost fit those requirements, yet my audition pair weren't as good as my 10' Fidelium audition pair. They stayed and the other two cables went back. I even switched from 10' to 12' Fidelium's with no resulting differences.
With the Fidelium's and the other audition pair's I noticed little difference in frequency response. What prompted my preferring them was their sense of ease (for lack of a better description) and a better soundstage. The differences were astounding, but there. Because I liked the Fideliums better and they were a couple times less expensive than the other two, keeping them was an easy decision.
Obviously, everyone's results will vary, especially depending upon one's amps and speakers. But that's why manufacturer's like Silversmith have a trial period. So rather than guessing about this, that or another thing, simply try them. You will be surprised when you receive them in a feather-weight, hand-size box. Although based on research, I expected them to weigh little and take up little space when rolled-up, the box's feel and size was still surprising.🙂
