Just returned from my VB-168 maiden voyage. Hooray seatpost clamp finally arrived. Did a quick 45km jaunt and here are my initial thoughts. Naturally my opinion will probably change over time...
1. As a "complete" build, I consider the 168 an "everyday" aero bike. It doesn't punish you by being too harsh, and neither is it flexy.
2. No creeks, rattles, or headset play. This is a combination of using a quality threaded BB, cable sound insulation, and the FSA headset working as intended. I also used light thread-locker on both derailleur hanger bolts.
3. No brake rub issues. I purchased brand new Shimano Ultegra rotors and aligning the calipers to them was super easy. Shimano is known to sell rotors that still need to be slightly "trued" upon arrival, but in this case I suppose I won truing lottery. I haven't been so lucky in the past...
4. I am still an advocate that quality wheels are more important than a frame. But I will also include having a proper bike fit and really paying attention to the decision of components at the contact points (saddle and handlebars). A frameset is only one aspect of the complete ride experience, albeit a critical one. As a complete bike with my current components, and assuming everything continues to work as intended, the 168 is a solid value if budget is really tight and if you can only have "one" bike. It doesn't have the same feeling of "urgency" as my Winspace T1500 or Allez Sprint which want you to go fast all the time, and that's okay. Those frames cost 3-4x more and wheels/tire/tube selection also play a huge role. The 168 frame wont be the reason your performance suffers I can assure you...
Regarding the topic of facing the caliper mounts (and subsequently the bottom bracket and headset opening) I spoke to a professional bike mechanic earlier today, who mostly deals with high-end bikes for competitive racing of all disciplines. He says it's very common for new frames from major brands to arrive needing to be faced. Do what you want with this information LoL
Of course my personal experiences and industry conversations are purely anecdotal. I've been fortunate not have any brake rub issues on any of builds due to caliper facing issues. And this is regardless of whether or not a brand actually faced the mounts from the factory. I was concerned my 168 would have facing issues, but the brand new set of trued rotors immediately solved that issue.
I'll follow up in a couple of weeks. Probably.