Alternatively, you could perform this integration from the start, as has been mentioned on these boards multiple times, and personally, I think it's the better way to go because as you "polarize" each aspect develops alongside the other. Granted, I think this way is probably also a bit more difficult as there's that issue of determining what may be more appropriate for different situations, but overall, I think the idea of keeping a healthy balance throughout the growth in "power" is well worth it for the additional effort in maintaining balance, no "syndromes" for example. Moreover, because integration starts at the beginning, rather than having to incorporate relatively large changes in the later stages by getting to know your shadow, all you really need to focus on is creating higher frequencies.
Now, in the post, you mentioned a benefit to light/dark polarization being learning how to channel power effectively, and I'll agree that going with one modality or the other would certainly help with that to a great extent, although mainly for the reason that the learning curve of doing so is smaller as there doesn't need to be as much attention paid to how that power is channeled, namely, it was already chosen, given the modality. The benefit of an integrated modality is that, because power doesn't just flow one way or the other, but rather in some form of cycle, by tuning how much is channeled in either direction, some form of harmony is achieved. Thus not only is power channeled effectively here, it is also channeled optimally for the situation. And just as you've pointed out in your blog post that the two modalities, while superficially opposing, are not actually in conflict, I'm sure you can understand that with effort, by integrating light and dark from the outset, there are ways to bypass the so called energy tension that may result if integration was done haphazardly.
Of course, that's just my personal preference and path on how to polarize. Eventually, it leads to the same place as the others, the only major difference is that harmony is just as much a part of the "destination" as it is the path.