Is there a reason that the monitor out is a Tele jack ?

My guess is:
They used 1/4" jacks for the monitor and power amp outputs because that connector is typically used by guitarists for line and speaker cables.

Well, monitor out is conceived in order to use a power amp and a cab, so the 1/4" is OK IMO. Main outs are meant for the mixing desk, and since there may be a long distance to cover XLR (a balanced line in general) seems a good choice.

As for monitors, those I've been seen and using, either come with their cables or accept 1/4" as well as XLR.

This. The professional cabs accept both.

The 8030 I bought came with their 1/4"-XLR cables.

Anyway, for a balanced line you don't have to use XLRs
Too bad the Profiler's 1/4" Main out are unbalanced

Neither the 8030, they have XLR as well.

I use balanced 1/4" cables everytime I have two devices with balanced 1/4" sockets

"There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy"

Quote from minesota

Maybe but then the main outs should be tele to. Not a big deal but still. Have to have a converter to use My genelec and a LOT of high end speakers only have xlr. If the monitor out should be used on stage then i Would prefer the benefits of the xlr aswell.
Btw, i played the kemper direct into 2 genelec 8260a speakers the other day. That Was crazy !
/Peter

/p

The main outs have TS, too.
you should connect monitor speakers there.

All active stage monitors have TS inputs available. I cannot see a drawback at all.

If you don't want to use adaptors on the cables, use a D.I. Box in between.

Quote from viabcroce

I use balanced 1/4" cables everytime I have two devices with balanced 1/4" sockets

1/4 TRS balanced definitely the way to go when you can! I too wish they had combo XLR/TRS jacks for balanced outputs on the mains on the Kemper as well.