By all means keep your lenses and try them!
I've used a 6" uncoated N.Y. Dagor on the old Fuji 50 in 4x5 and Kodachchome 64 (120). About the only trouble you are likely to have is in a high contrast scene with deep shadows, the black parts of the shadows can sometimes take on the dominant color cast in the scene, but a good (read: compendium, properly adjusted) lens shade will mostly cure this. I didn't much like F-50 but the 6x7cm Kodachromes were and are lovely.
I used a 30cm uncoated Berlin Dagor with 8x10 EPP 100, getting similar results, except the Ektachrome didn't make all the greens look like flourescent broccoli.
I used a multicoated Kern Dagor with 8x10 EPP 100, Ektachrome 120, Kodachrome 120 - I've never seen better transparencies. I didn't have Drew's trouble with too high contrast, perhaps because I chose the scenes carefully - I'd already learned some contrast lessons in B&W (with T-Max) from that lens.
Try your lenses, use the longest scale transparency film available - just imagine the "Dagor Look" translated to color, that's what you'll get. (smiling smiley)
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