Spec-X attempt, Spuria x Foetidissima [1 Attachment]

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I don't remember who told me about this technique, and I don't know if
it actually works, but I finally decided to try it. After years of
unsuccessful attempts of pollinating a large Spuria flower with Iris
foetidissima pollen the usual way, this time I cut 1-2 inches off the
style arms and applied to the pollen to the exposed surface. (See photo)

The theory, as I remember it, was that the pollen tubules of Iris
foetidissima would expire before reaching the ovaries of the large
Spuria. Basically they have 3x to maybe 6x the distance to travel than
in a Iris foetidissima flower. So by mechanically reducing the length
of the style arm the chances for a successful cross have increased.
Supposedly.

Does this sound familiar to anyone else? Has anyone succeeded with this
approach? Does anyone remember published accounts of it?

Thanks,
Dennis in Cincinnati