I have and use both types of bulbs.
You implied that wiring/sockets for the two types were not the same. Again, What is the difference?
http://www.beaconlighting.com.au/energy_faqs_answers.php
EXCERPT
Q: Can I replace incandescent lights with CFLs?
A: CFLs are available to fit most of the common household light fittings but not all. New CFLs are being developed and tested for other lighting applications and will gradually become available.
Q: Do I need to rewire my house to accommodate CFLs?
A: Incandescent lamps can be directly replaced with CFLs, however replacement of low voltage halogen downlights requires the services of an electrician.
Q: Are CFL’s compatible with my current light fittings and what base connections do they come in?
A: In most cases you will be able to directly replace all globes throughout your home with CFLs, they do come in a wide range of base types including SBC (B15), SES (E14), ES (E27) and BC (B22), they are also now available in GU10 and GX53 to replace 240 volt downlights and spotlights.
However, there is currently no direct replacement for the low voltage (12 volt) downlight globe as a CFL, we anticipate this will happen in the short future and for now we recommend using 35 watt IRC lamps from a reputable brand. The 35watt IRC will give you the same amount of light as your current 50 watt globe, and will save 30% off your lighting electricity costs. So it’s very easy to make savings on electricity and greenhouse gas emissions today.
Q: Is the mercury found in CFLs dangerous?
A: The trace amounts of mercury sealed within glass tubing in CFLs is not dangerous to users when the CFL is in tact or in use because no mercury is released.
However mercury is a toxic substance therefore it’s important that CFLs are handled carefully and disposed of responsibly.
Q: What if I break a CFL?
A: If you break a CFL you can release mercury into the atmosphere. Gently sweep up the glass fragments and use a damp cloth to pick up fine particles. If the breakage is on carpet, use sticky tape then a damp cloth to clean up the debris prior to vacuuming. Place all debris into a sealed plastic bag for disposal and ventilate the room where possible.