Expounding on what I said earlier about conflicting information about using ethylene post harvest...
Most sources say something like this, but they seem to be mostly referencing the same source, and it seems to be mostly from studies done on annums and sweet peppers. Plus capsicum have a huge variation in how they ripen among species and cultivars.
Ethylene Production and Sensitivity: Peppers are non-climacteric and produce very low levels of ethylene at 0.1 to 0.2 μL kg-1 h-1 at 10 and 20 °C (50 and 68 °F), respectively. The use of ethylene to enhance ripening or color change is not recommended because it stimulates respiration and softening more than coloration. The most effective way to color peppers is to hold partially colored fruit at 20 to 25 °C (68 to 77 °F) with RH > 95%. To maintain quality, store them away from ethylene-producing fruits and ripening rooms.
http://www.ba.ars.usda.gov/hb66/108pepper.pdf
Fruit must be handled carefully to prevent skin
breakage and punctures that could lead to decay.
Cooling peppers as soon after harvest as possible
will extend their shelf life. Storage temperature
must be carefully monitored since fruit ripening,
and therefore coloring, can continue to occur at
temperatures above 50º F and chilling injury can
occur below 45º F. Do not store with ethylene producing
fruit.
http://www.uky.edu/Ag/NewCrops/introsheets/hotpeppers.pdf
On the other hand, there's this...
Rates of Ethylene Production
Some chiles such as jalapeños show a nonclimacteric physiology during color change and produce very low levels of ethylene: 0.1-0.2 µl/kg•hr at 20-25°C (68-77°F). Other chiles such as Habaneros show increases in ethylene production during ripening and may produce over 1 µl/kg•hr at 20-25°C (68-77°F).
Responses to Ethylene
Responses to ethylene depend on the particular variety of chile. Chile poblanos for example may respond to ethylene treatment, while Jalapeño peppers do not. As with bell peppers, holding partially colored chile peppers at warmer temperatures of 20-25°C (68-77°F) with high humidity (>95%) is effective to complete color development. Adding ethylene may further enhance ripening but response is variety dependent.
http://postharvest.ucdavis.edu/pfvegetable/ChilePeppers/
Seems to me like habaneros could possibly benefit from extra ethylene, since they produce much more than other varieties on their own, and show a more climacteric ripening pattern, but it's hard to find information specific to chinenses or habaneros. So maybe you should do half with fruit that produces a lot of a ethylene, and half without and let us know how it turns out.
Also, as far as I know it generally wouldn't make any sense to try to ripen fruits which produce low levels of ethylene on their own and are considered non-climacteric, with ethylene-producing fruits. If they don't show a climacteric peak and a spike in ethylene production after being picked, then it's probably because they aren't sensitive to ethylene and don't really use it to ripen. It probably wouldn't do any good and may just cause them to spoil faster. Just because ethylene causes a banana or avocado to ripen, doesn't mean it will cause a grape or strawberry or bell pepper to ripen. It's not a universal fruit ripener.