I have been experimenting with cloth pull-ons.
The Kins double-layer terry pull-on is a good product, but is intended to be used, as needed, with other layers. For overnight, I use it over a single-layer terry pull-on and under a much heavier (and larger) cloth flannel pull-on (total of three layers). As I stay well-hydrated even at night that works well provided that I remove the cloth pull-ons as soon as I get up in the morning.
Wearing layers of pull-ons can be helpful for those with limited manual dexterity for whom using diaper pins with prefold cloth diapers is difficult.
A double-layer terry pull-on over a single-layer terry pull-on works well for an afternoon nap (to avoid side leaks from a disposable). You can wear a double-layer terry with a cloth booster pad but will not get as much protection from a side leak.
Remember - with cloth, bulk = protection.

Without SAP, you must layer cloth for bulk to obtain the desired absorbency.
Cloth pull-ons are very effective when worn over a premium disposable to extend the length of time between changes while reducing the likelihood of a leak. Double diapering with two disposables also would provide adequate absorbency but would be more likely to leak while sleeping on one's side.
Due to the laundering requirements, these methods work best at home. As with all use of cloth diapers, cloth pull-ons have an initially high cost and then become less expensive than using disposables.
--John