Yes, I put in a (forked) comment to that effect.

╭─ーーーーーー─┬────────╮
│ 完膚なき　　 │ 39,123 │
│ 完膚なきまで │ 37,961 │
│ 完膚無き　　 │ 15,213 │
│ 完膚無きまで │ 14,202 │
╰─ーーーーーー─┴────────╯

Just noticed we have entries for 完膚なきまで and 完膚無きまで, so this probably isn't needed.

jitsuyou

Google N-gram Corpus Counts
╭─ーーーー─┬────────┬───────╮
│ 完膚　　 │ 56,637 │ 51.0% │
│ 完膚なき │ 39,123 │ 35.3% │
│ 完膚無き │ 15,213 │ 13.7% │
╰─ーーーー─┴────────┴───────╯

Seems like 完膚 is practically always used with -なき.
I tried my best with the glosses but they might need some work.