Kent's blend IS a bit sweet for me too.

I've mentioned this to Vlad and from what I figure, the sweetness is part of the basic coffee flavoring used or he would have decreased it for me. I have a few 'fixes' - one is to add Ahl. "House Blend" - which moves it toward the JG blend and reduces the sweetness. The House Blend is a light tobacco so it doesn't really impose a big tobacco flavor when used in this way, but it does cut the sweetness. The other - and this would be for people who like strong coffee - is to add BWB espresso and/or Decadent Vapours Doppio Espresso from Liberty Flights USA or from DV if you're in the UK. The DV is very strong so easy goes it.
Also, more watts tends to bring out the coffee and reduce the sweetness, but too much wattage will 'burn the coffee'.
That said, I sometimes just vape it straight too.