This is a photo of what a Squadron Pro with the two different type of LED lenses as a single combo light looks like. The top two elements are spot and the bottom two have vertical fresnel-type diffusers to spread the light to be more "flood" type. Keep in mind that LEDs are very directional and spotty, which is why Whelen, AeroLED and other manufacturers have two types of bulbs with LEDs when they only had one type of incandescent bulbs.
In the end I have to agree that it's probably not a big deal for the taxi light to have the vertical diffuser lenses. In the particular RV-3B associated with this photo I only have one light in one wing so I was trying to cover all bases with a single installation by going with the combo light. The only nit I have with the Squadron Pros is they are made for 4x4 off-road vehicles and are therefore overly sturdy, have massive heat sinks and are very heavy.
The bracket shown holding the Squadron Pro was one made by a fellow VAF-er. He made a run of these adapter brackets for the Duckworks mounts a couple of years back.
On a side note I can't tell how many times I have seen the diffuser type LEDs mounted with the diffuser lines horizontal rather than the appropriate vertical orientation.