Yes, indeed, Robert's idea is very interesting and creative (that's what really good webmasters and SEOs characerizes IMHO).
But I guess then there are still the truncating dots and there is another "problem":
Usually a page shouldn't be optimized for two sets of KWs. Two or three relating KWs/phrases o.k., but two SETS of KWs usually is too much and not a good idea. Then better creating two pages in order to better focuse on both parts.
You cannot rank with all KWs, you have to make a decision and concentrate (onpage and offpage). IMHO this problem is only neglectable if choosing a "second class" KW or phrase which has very few competition and you can rank without many backlinks and onpage love.
Just my 2cents...
@ZydoSEO: This makes sense and that's exactly what I'm doing. Make the description as relevant as possible for as many KWs as possible. It makes it more difficult to create teasing and clickable sentences when you have to use several KWs/longtail. But if you at least accomplish to create readable sentences with your KWs.... I think you cannot do more to encourage Google to use your description. Right?
And because it's more difficult to create tempting sentences with several pre-determined KWs/longtails/phrases which "must" appear, it is important to use the place as effective as possible. Therefore my question...and the circle is complete.