Any feed back?

If you desire a single antenna with excellent SWR match at many bands, then I
am of the opinion that there is value here.

Even the most efficient horizontal dipole is almost useless for DX--the assumed
need, not NVIS-- unless it is high up. This is because all low dipoles have low
gain at low elevations: Their launch angle is quite high.

I would suspect that typical ohmic losses on the BW are 2-5 dB. The mismatch
lsses are negligible.

Getting this well over a wave high at the lowest freq of operation will afford
at least that, and probably more, in a gain differential at low angles,
compared to an efficient, low dipole.

The point: a high BW antenna will work well. Any low dipole will work poorly.
The in-between is a valid issue to ponder.

73,
Chip N1IR