Blix is to completion, it shouldn't matter how you get it in. You're not aiming for even, you're aiming for total removal of silver.
Analogue Photography and Film FAQ
Open-Source F/Stop Timer
Originally Posted by Greg Davis
I tend to do it before and just slip the film down between the ridges as I load.
I also put the clips in to aid in loading sheet film, then take the clips out when I put the lid on. I have had them come loose and bounce around on the emulsion.