EMI in charge pump switching regulator
EMC = Electromagnetic Compatibility.  EMI = Electromagnetic Interference.

You can try to make it compatible by using smart PCB layout techniques. But it depends on your goals and final application. New buck converters are smaller, their EMI radiation is smaller as well (EMI is proportional to line length of the components). Most of the EMI you have to worry about is from the charge/discharge in the feedback loop. So, it is very important that you get your layout optimized for reducing it all. For example, 


Large ground planes to take all that corrent away. 
Parallel traces/caps to ground or V- in order to cancel noise and EMI.
Choosing caps to match your application. 
You can also shield your converter to prevent noise to nearby elements. 
If you have large Inductor, you might want to consider placing another one on the opposite side of the PCB to cancel the noise/EMI it can cause. You can use also Ferrite Beads to get rid of some of the EMI. 


Bottom line, I guess it all matters how much noise/EMI you are willing to accept, and how much you are willing to invest in getting rid of it. As far as Inductor based switches are concered, I used both and aside of the size, I did not notice much difference. I guess in my case it all boiled down to the design.