:dancing-banana:I wear both.

Both

I wear both. Father Hewko blessed our scapulars.

I always wear the Brown Scapular and a Crucifix, and carry a Miraculous Medal with my Rosary, which I always have on me. I make my own scapulars (about 2 x 2-3/4 inches, according to the Catholic Encyclopedia article on the Brown Scapular which says that ecclesiastical regulations require them to be that size... and incidentally, I've never been able to find anything about those rules having ever been changed, though I've looked) and I've been thinking about sewing a Miraculous Medal and a St. Benedict Medal (also extremely highly indulgenced) inside my next one.

The article in the Catholic Encyclopedia is at
http://www.newadvent.org/cathen/13508b.htm

Here is the relevant bit:

General ecclesiastical regulations concerning the small scapulars

The small scapulars consist essentially of two quadrilateral segments of woolen cloth (about two and three-quarter inches long by two inches wide), connected with each other by two strings or bands in such a manner that, when the bands rest on the shoulders, the front segment rests before the breast, while the other hangs down an equal distance at the back. The two segments of cloth need not necessarily be equally large, various scapulars having the segment before the breast of the above dimensions while the segment at the back is much smaller. The material of these two essential parts of the scapular must be of woven wool; the strings or bands may be of any material, and of any one colour. The colour of the segments of woollen cloth depends on the colour of the monastic habit, which it to a certain extent represents, or on the mystery in honour of which it is worn. Here, however, it must be remarked that the so called Brown Scapular of the Carmelites may be black, and that the bands of the Red Scapular of the Passion must be of red wool. On either or both of the woollen segments may be sewn or embroidered becoming representations or other decorations (emblems, names etc.) of a different material. It is only in the case of the Red Scapular that the images are expressly prescribed.

Both but I don't have a good chain for my Miraculous.

I wear a miraculous medal attached to the scapular.  

I can't wear my scapular "equidistance".  Does this invalidate the indugence?

I don't think so. I think equidistance was to give the proper length. I think most peoples scapulars hang up closer to back of the neck.