I think this comment is a little unfair and maybe applies to older batches of the TF Nishiji's. I've seen the weird spine with the depression of the core steel creating a channel which could trap moisture leading to corrosion. But this wasn't the case with the two 210mm gyuto's I received direct from TF this morning. I'll post some photo's tomorrow.
The spine's of both knives were sanded smooth and slightly rounded. The only sharp edge (apart from the cutting edge:laugh
was the choil but its not uncomfortable. Overall, for the price paid I was pretty impressed with the fit and finish, especially after hear all the negative reports in the past. I got the D-shaped handles knowing I'd install a custom handle at some point. OOTB edge is scary sharp but this may also because the blades I specified were to be very light and thin. The 49mm heel height example is only 105g so it really feels and performs like a laser although there is virtually no flex in the blade. The 45mm is 125g and a little thicker along the spine. I can't detect any over grind on either blade.
I would agree completely regarding the western handle. Its butt ugly and seems poorly executed.