Personally, I find it very, very, very easy to measure it out by using a 1ml syring and a 22gauge needle. The 22 gauge doesn't tear up the rubber stopper as bad as an 18 gauge. Although slower, the 22 gauge is still pretty fast.
The problem is that most slin syringes have a very narrow needle, Liquidex is SO thick that its hard to even GET it through like a 22 gauge and above needle, let alone like a 29 gauge or whatever is on most insulin needles.
Maybe IF you can attach like an 18 gauge needle to a slin syringe, sure ...... but I dont even know if most slin syringes HAVE removeable needles.