Here is an interesting take and combination of the two deck archetypes in the current Khans of Tarkir Standard. It was played by Ivan Jen and got the first place in the event. The list looks like a regular Heroic aggro deck but can combo off if left unchecked. Check out the deck below.

Jeskai Heroic Combo
by Ivan Jen
1st Place at StarCityGames.com Standard Open on 11/1/2014

Creatures (16)
4 Akroan Crusader
4 Favored Hoplite
2 Lagonna-Band Trailblazer
4 Monastery Swiftspear
2 Seeker of the Way

Spells (26)
4 Springleaf Drum
4 Dragon Mantle
4 Jeskai Ascendancy
4 Defiant Strike
4 Gods Willing
2 Jeskai Charm
4 Retraction Helix

Lands (18)
4 Battlefield Forge
3 Mana Confluence
4 Mystic Monastery
2 Shivan Reef
1 Temple of Enlightenment
4 Temple of Triumph

Sideboard
3 Chasm Skulker
2 Seeker of the Way
2 Ajani’s Presence
1 Disdainful Stroke
3 Erase
2 Magma Jet
2 Negate