It's really easy! I used it as framework (it can be embedded with other languages) but now that we are using AngularJS everything works great out of box - no more need/worry about "if-then" statements etc..
just code your app logic once and forget all will work fine both client side (javascript), server(nodejs). There isn't anything so far i dislike yet; there might come some things later when you get into deeper level projects however they do provide documentation which helps alot too if needed. As web development frameworks go this one allows me keep my skills sharp while still making use of new technologies like angular js + nodeJs+ mongoDb.