I switched to paracord from shock cord and find it uncomfortable. When you get the IX UQ snugged up, the cord is by tight your face and calves and hinders a diagonal lay. Loosen it up and it sags underneath.
I put on your version of the horse collars and it seals up well but there was still some CBS.
IMHO insultex is too fussy and is being replaced with a down UQ or climashield UQ.