Well, I changed my dinner plans last night and did try this. I'm with you, MacKenzie, need a lot more practice and experimentation to catch up to Syz. I did 2 styles - wedges and frites. Potatoes in the SV @ 183F for 30 minutes. Then shocked them under running cold water in the sink (still in the bags).
To bryan's point, I did dust the wedges in cornstarch and seasoning before frying in my deep fryer @ 360F. First batch cooked for 4 minutes, not crispy at all, despite having a light brown color. Second batch for 6 minutes, still not very crispy, and just a tad darker. Don't think that longer was going to significantly improve the results. Next time, I'll use my bigger fryer, which gets to 375F, and see if it improves the results.
The classic cut frites were fried without coating, again @ 360F, for about 4 1/2 minutes. Decent, but I've done much better using traditional methods. Did another batch for 5 minutes. Again, only marginal improvement in crispiness. Still thinking the temp needs to be higher (370F - 375F).
But, to Syz's point, the interior texture was spot on. So, just gotta keep playing with the second frying - temp and times, to see if I can replicate my classic double fried frites!