I don't think so as there is an option in Peakd (and possibly in other interfaces) to cross-post to your blog if you're posting in a community. It will show up twice in your "all posts" view then (on Peakd, I don't know if other interfaces have one) and will also show up twice in your followers' feeds (or more times if you also cross-post into other communities).
I'd advise cross-posting (tick the box that asks if you also want to post to your blog when posting to the community) rather than posting twice as I know that there are people out there looking for things to get upset about that will have a tantrum about you "double dipping".