I just realized that While I'm looking for good "normal capture/fossil spreads" I'm not keeping an eye out for spreads that work for the roamer. Normal Capture spreads are F:1,2,3,4,5,6 in that order. However, the roamer's IVs are F:2,3,4,7,5,6 in that order, as seen here.
Kaphotics, when glancing at your screenshot of you capturing Landros, you seem to have your IVs in that order. Did you find that Landros's IVs are generated in that same order (2,3,4,7,5,6)?
Or am I misreading your post?